Toyota Prius engine burns oil every 1000 miles, causing catalytic converter failure on Toyota Prius

Some Toyota Prius owners report experiencing excessive oil burning, leading to catalytic converter failure due to clogging from burnt oil. This issue is particularly common in older models, such as the 2005 Prius with nearly 150,000 miles. The oil burning process can significantly impact vehicle performance as the catalytic converter becomes obstructed. To mitigate this problem, some owners have implemented oil catch cans to trap excess oil and prevent it from entering the intake, which contributes to clogging. Additionally, the use of specific oil additives, like MOA oil additive, is reported to help clean oil off the cylinders and reduce oil consumption over time. However, owners are advised to be cautious with oil products, as certain additives containing phosphorus and sulphated ash can harm the catalytic converter. Regular maintenance and monitoring of oil levels are crucial for preventing excessive oil burning and related catalytic converter issues in the Toyota Prius.